Improvement in brick-kilns



s. M. HAMILTON..

Brick Kiln. y

` Patented Feb. 15,'1870.l

diritta gta-traf aan crow.

sitas M. HAMILTON, or

.BALriMoRn MARYLAND.

Leners Patent No. 99,887, amalfitana/ry '15, 1870.

The Schedule referred to in these Letters Patent and making part of the same.

,To all whom it may concern: y Be it known that I, SlLs M. HAMILTON, of the city and county of Baltimore, and State of Maryland, have invented certain Improvements in Brick-Kilns; and I do hereby declare that the following is a full, clear, andv exact description thereof,'reference` being had to the annexed drawings making part of this specification, in whichl Figure 1 is a horizontal section; .liigure 2 is a side elevation;

gigure 3 is a perspective view of a movable furnace; an

Figure 4 is a vertical section on line :i: x, iig. 1.

The same letters are used in all the ignresto indicate identical parts.

My invention relates to what are known as contin-' nous kilns, where the bricks in a series of compartlments are successively fired, the work of burning,

placing, and removing the burned bricks going on continuously; and consists in improvements in the details of 'construction and arrangement to he hereinafter set forth.

'In the annexed drawings I have shown aseries of kilns or compartments arranged in-'the form of a circle. The compartments are marked A, and they are separated by walls of brick, marked B. These walls areshown on one-half of lig. las they would be built ifpermanently built into the kiln. 'lliey may be laid up from green bricks, or the bricks maybe so piled as to form blocks of bricks, arranged with the necessary arches and interstitial spaces for the free circulation of the draft.

Thewalls B, in vcase Athe furnaces C are built alter# nately at opposite ends ofthe consecutive kilns, would have spaces, B', alternately at the ends of the compartment farthest from the furnace, through` which 'chimney for about each third compartment, and they should have dampers, so .that the draft may be regulated. .Ilhey may be permanent, or may be portable, and carried from one subdivision to another.

A jet of steamfintroduced into the chimney through the pipe G may he used to cause a suction to draw off the water-smoke, and increase the draft; and the 'pipes G may be used to pass a jet of steam into the furnace, or into arches leading out of the furnaces.-

In covering the kilns, tlues running in the direction parts of the kiln.

of the length of the kilns, as shown at I in ig. 4,

should be' formed to secure a free circulation through the upper parts of the kilns; and in order that the burning ofthe bricks and the driving off of the water-smoke may be regulated, I propose to build double walls, K, which may be closedV by a sliding door to completely out off the connection between different A space must be left in the kiln at L to give access to the center of the kiln, and the compartments on each side of the openingL be connected by an underground'iluc, M, of capacity sutfioient to permit a free l passage ofthe draft from one end of the kiln to the other. Y

A' The force of this`draft may be increased by driving jets of steam into the flue M in the direction of the draft.

The furnaces may bc built in one or two tiers. In the latter case the arches will be built in laying the green bricks.

Instead `of having permanent walls at IL, to separate the kiln by a slide, openings may be left in the external walls for a door to be slid between the piles of green bricks as placed in the kiln, and subdivide it at that point where chimneys would be placed to carry off the water-smoke.

I have `indicated at H boilers which maybe built intov the walls, or they may be separate from the kilns, with ,independent furnaces, if preferred.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. Providing a series of kilns, set in a circle around au intcriorspace, accessible bya passage or break between anyl two of said kilns, with tire-doors at both the outer and inner sides of the kilns, as herein shown and descrihcdf Y 2. Providing a progressive kiln, substantially such as herein. described, with sliding partitions, to form, when desired, separate chambers, and also with steamdraft jets in the chimneys, when said parts are arranged substantially as herein shown `and described.

3. 'In combination with a kiln, a movable furnace', placed outside of the walls, and capable of being ymoved from one compartment to another, 'substantially as set forth.

4. In combination with a circular kiln, having an opening, L, the lu'e M, for connecting the ends of the kiln, substantially as set fortli.

ln testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

S. M. HAMILTON.-

Witnesses:

B. .Enyy. J. Eins. A. Rnrrnnfr.A 

